Mesophyll-derived sugars are positive regulators of light-driven stomatal opening.
New Phytol
; 230(5): 1754-1760, 2021 06.
Article
in En
| MEDLINE
| ID: mdl-33666260
ABSTRACT
Guard cell membrane ion transport and metabolism are deeply interconnected, and their coordinated regulation is integral to stomatal opening. Whereas ion transport is exceptionally well understood, how guard cell metabolism influences stomatal movements is less well known. Organic metabolites, such as malate and sugars, fulfill several functions in guard cells during stomatal opening as allosteric activators, counter-ions, energy source and osmolytes. However, their origin and exact fate remain debated. Recent work revealed that the guard cell carbon pool regulating stomatal function and plant growth is mostly of mesophyll origin, highlighting a tight correlation between mesophyll and guard cell metabolism. This review discusses latest research into guard cell carbon metabolism and its impact on stomatal function and whole plant physiology.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Photosynthesis
/
Plant Stomata
Language:
En
Journal:
New Phytol
Journal subject:
BOTANICA
Year:
2021
Document type:
Article
Affiliation country:
Switzerland